<template>
  <div class="total-header">
    <div class="header">
      <el-container>
        <el-header height="80px" class="header-cont">
          <el-row>

            <el-col class="logo" :span="3">
              <a href="/">
                <img src="@/assets/head-logo.svg" alt="">
              </a>
            </el-col>

            <el-col class="nav" :span="15">
              <el-row>
                <el-col
                  :span="2"
                  v-for="(value,index) in category_list"
                  :key="index">

                  <router-link
                    :to="value.link"
                    v-if="!value.is_site"
                    @click.native="nav_num=index"
                    :class="{active:nav_num===index}">
                    {{value.title}}
                  </router-link>

                  <a
                    :href="value.link"
                    v-else>
                    {{value.title}}
                  </a>

                </el-col>
              </el-row>
            </el-col>

            <el-col :span="!token?8:10" class="header-right-box">

              <div class="search">
                <input type="text" id="Input" placeholder="请输入想搜索的课程" v-show="!status" ref="Input"
                       @blur="ReChangeStatus">
                <ul class="search-ul" v-show="status" @click="ChangeStatus">
                  <span>Python</span>
                  <span>Linux</span>
                </ul>
                <p>
                  <img class="icon" src="@/assets/sousuo1.png" alt="" v-show="status">
                  <img class="icon" src="@/assets/sousuo2.png" alt="" v-show="!status">
                  <img class="new" src="@/assets/new.png" alt="">
                </p>
              </div>

              <div class="register" v-show="!token">
                <router-link to="/login">
                  <button class="signin">登录</button>
                </router-link>
                &nbsp;&nbsp;|&nbsp;&nbsp;
<!--                <a target="_blank" href="https://www.luffycity.com/signup">-->
                  <router-link to="/register">
                    <button class="signup">注册</button>
                  </router-link>

<!--                </a>-->
              </div>

              <div class="shop-car" v-show="token">
                <router-link to="/cart">
                  <b>{{$store.state.cart.cart_length}}</b>
                  <img src="@/assets/shopcart.png" alt="">
                  <span>购物车 </span>
                </router-link>
              </div>

              <div class="nav-right-box" v-show="token">
                <div class="nav-right">
                  <router-link to="/myclass">
                    <div class="nav-study">我的教室</div>
                  </router-link>
                  <div class="nav-img" @mouseover="ShowInfoList" @mouseout="HideInfoList">
                    <img src="@/assets/head_pic.png" alt="" style="border: 1px solid rgb(243, 243, 243);">
                    <ul class="home-my-account" v-show="list_status">
                      <li>
                        <router-link to="/perfect-information/">
                          我的账户
                          <img src="https://hcdn1.luffycity.com/static/frontend/activity/back_1568185800.821227.svg" alt="">
                        </router-link>
                      </li>
                      <li>
                        我的订单
                        <img src="https://hcdn1.luffycity.com/static/frontend/activity/back_1568185800.821227.svg"
                             alt="">
                      </li>
                      <li>
                        贝里小卖铺
                        <img src="https://hcdn1.luffycity.com/static/frontend/activity/back_1568185800.821227.svg"
                             alt="">
                      </li>
                      <li>
                        我的优惠券
                        <img src="https://hcdn1.luffycity.com/static/frontend/activity/back_1568185800.821227.svg"
                             alt="">
                      </li>
                      <li>
                    <span>
                      我的消息
                      <b>(26)</b>
                    </span>
                        <img src="https://hcdn1.luffycity.com/static/frontend/activity/back_1568185800.821227.svg"
                             alt="">
                      </li>
                      <li @click="LogoutHandler">
                        退出
                        <img src="https://hcdn1.luffycity.com/static/frontend/activity/back_1568185800.821227.svg"
                             alt="">
                      </li>
                    </ul>
                  </div>
                </div>
              </div>

            </el-col>

          </el-row>
        </el-header>
      </el-container>
    </div>
  </div>
</template>

<script>
  export default {
    name: "Header",
    data() {
      return {
        token: false, // 登录与否的状态标识
        status: true,  // input搜索标签与ul标签的状态标识
        list_status: false, // 下拉菜单的显示与否的状态标识
        category_list: [],
        nav_num: null,
      }
    },
    methods: {
      ChangeStatus() {
        this.status = false;
        console.log(this.$refs);  // {Input: input#Input}
        // this.$refs.Input.focus();  // 还是不生效，vue处理dom操作是异步过程，我们需要先执行改变状态，在执行获取光标
        this.$nextTick(() => {
          this.$refs.Input.focus();
        })
      },
      ReChangeStatus(){
        this.status = true;
      },
      ShowInfoList(){
        this.list_status = true
      },
      HideInfoList(){
        this.list_status = false
      },
      get_nav_data(){
        this.$axios.get(
          `${this.$settings.Host}/home/nav`
        ).then(
          (response) => {
            this.category_list = response.data;
          }
        ).catch(
          (error) => {
            console.log(error);
          }
        )
      },
      check_login_status(){
        this.token = sessionStorage.user_token || localStorage.user_token;
      },
      LogoutHandler(){
        localStorage.removeItem('user_token');
        localStorage.removeItem("id");
        localStorage.removeItem('username');
        sessionStorage.removeItem('user_token');
        sessionStorage.removeItem("id");
        sessionStorage.removeItem('username');
        this.check_login_status();
      }
    },
    created() {
      this.get_nav_data();
      this.check_login_status();
      // 检查用户登录状态
      // this.check_user_login();
      let cart_length = sessionStorage.getItem('cart_length');
      if (cart_length){
        this.$store.commit('add_cart',cart_length);
        console.log(this.$store.state.cart.cart_length);
      }
      this.cart_length = this.$store.state.cart.cart_length;
    }
  }


</script>

<style scoped>
  .router-link-active {
    color: #f5a623 !important;
    font-weight: 500;
    border-bottom: 2px solid #f5a623;
  }

  .total-header {
    min-width: 1200px;
    z-index: 100;
    box-shadow: 0 4px 8px 0 hsla(0, 0%, 59%, .1);
  }

  .header {
    width: 1200px;
    margin: 0 auto;
  }

  .header .el-header {
    padding: 0;
  }

  .logo {
    height: 80px;
    display: flex; /* css3里面的弹性布局，高度设定好之后，设置这个属性就能让里面的内容居中 */
    align-items: center;
  }

  .nav .el-row .el-col {
    height: 80px;
    line-height: 80px;
    text-align: center;

  }

  .nav a {
    font-size: 15px;
    font-weight: 400;
    cursor: pointer;
    color: #4a4a4a;
    text-decoration: none;
  }

  .nav .el-row .el-col a:hover {
    border-bottom: 2px solid #f5a623
  }

  .header-cont {
    position: relative;
  }

  .search input {
    width: 185px;
    height: 26px;
    font-size: 14px;
    color: #4a4a4a;
    border: none;
    border-bottom: 1px solid #ffc210;

    outline: none;
  }

  .search ul {
    width: 185px;
    height: 26px;
    display: flex;
    align-items: center;
    padding: 0;

    padding-bottom: 3px;
    border-bottom: 1px solid hsla(0, 0%, 59%, .25);
    cursor: text;
    margin: 0;
    font-family: Helvetica Neue, Helvetica, Microsoft YaHei, Arial, sans-serif;
  }

  .search .search-ul, .search #Input {
    padding-top: 10px;
  }

  .search ul span {
    color: #545c63;
    font-size: 12px;
    padding: 3px 12px;
    background: #eeeeef;
    cursor: pointer;
    margin-right: 3px;
    border-radius: 11px;
  }


  .search {
    height: auto;
    display: flex;
    align-items: center;
  }

  .search p {
    position: relative;
    margin-right: 20px;
    margin-left: 4px;
  }

  .search p .icon {
    width: 16px;
    height: 16px;
    cursor: pointer;
  }

  .search p .new {
    width: 18px;
    height: 10px;
    position: absolute;
    left: 15px;
    top: 0;
  }

  .register {
    height: 36px;
    display: flex;
    align-items: center;
    line-height: 36px;
  }

  .register .signin, .register .signup {
    font-size: 14px;
    color: #5e5e5e;
    white-space: nowrap;
  }

  .register button {
    outline: none;
    cursor: pointer;
    border: none;
    background: transparent;
  }

  .register a {
    color: #000;
    outline: none;
  }

  .header-right-box {
    height: 100%;
    display: flex;
    align-items: center;
    font-size: 15px;
    color: #4a4a4a;
    position: absolute;
    right: 0;
    top: 0;
  }

  .shop-car {
    width: 99px;
    height: 28px;
    border-radius: 15px;
    margin-right: 20px;
    background: #f7f7f7;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    cursor: pointer;
  }

  .shop-car b {
    position: absolute;
    left: 28px;
    top: -1px;
    width: 18px;
    height: 16px;
    color: #fff;
    font-size: 12px;
    font-weight: 350;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    background: #ff0826;
    overflow: hidden;
    transform: scale(.8);
  }

  .shop-car img {
    width: 20px;
    height: 20px;
    margin-right: 7px;
  }

  .nav-right-box {
    position: relative;
  }

  .nav-right-box .nav-right {
    float: right;
    display: flex;
    height: 100%;
    line-height: 60px;
    position: relative;
  }

  .nav-right .nav-study {
    font-size: 15px;
    font-weight: 300;
    color: #5e5e5e;
    margin-right: 20px;
    cursor: pointer;

  }

  .nav-right .nav-study:hover {
    color: #000;
  }

  .nav-img img {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: inline-block;
    cursor: pointer;
  }

  .home-my-account {
    position: absolute;
    right: 0;
    top: 60px;
    z-index: 101;
    width: 190px;
    height: auto;
    background: #fff;
    border-radius: 4px;
    box-shadow: 0 4px 8px 0 #d0d0d0;
  }

  li {
    list-style: none;
  }

  .home-my-account li {
    height: 40px;
    font-size: 14px;
    font-weight: 300;
    color: #5e5e5e;
    padding-left: 20px;
    padding-right: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
  }

  .home-my-account li img {
    cursor: pointer;
    width: 5px;
    height: 10px;
  }

  .home-my-account li span {
    height: 40px;
    display: flex;
    align-items: center;
  }

  .home-my-account li span b {
    font-weight: 300;
    margin-top: -2px;
  }


</style>

